{
  "source": "01_紧固件/0102_螺钉/010299_通用螺钉/ball screw rod.solidworks_evidence_v2.json",
  "part_id": "ball-screw-rod",
  "source_status": "hybrid_semantic_surfaceir_pending",
  "source_self_validation": {
    "schema": "solidworks.cad_evidence.self_validation.v1",
    "passed": false,
    "meaning": "complete reusable extraction; not a claim of backend feature support or 1:1 rebuild",
    "counts": {
      "features": 18,
      "opaque_exact_geometry_features": 1,
      "typed_body_features": 0,
      "direct_semantic_features": 0,
      "typed_features_requiring_history": 0,
      "complete_history_features": 0,
      "spline_segments": 0,
      "incomplete_splines": 0,
      "exact_bcurves": 0,
      "incomplete_bcurves": 0,
      "exact_bsurfaces": 0,
      "incomplete_bsurfaces": 0,
      "exact_trimmed_faces": 0,
      "incomplete_trimmed_faces": 0,
      "missing_exact_geometry_catalog_references": 0,
      "incomplete_topology_records": 0,
      "skipped_getter_signatures": 0
    },
    "feature_contracts": [
      {
        "feature": "ball screw rod.stp<1>",
        "family": "opaque_exact_geometry",
        "passed": false,
        "blockers": [
          "opaque/imported feature geometry capture is incomplete",
          "only 0/53 owned faces were captured"
        ]
      }
    ],
    "blockers": [
      "ball screw rod.stp<1>: opaque/imported feature geometry capture is incomplete",
      "ball screw rod.stp<1>: only 0/53 owned faces were captured"
    ]
  },
  "step_inference": {
    "available": true,
    "face_count": 103,
    "surface_counts": {
      "bspline": 50,
      "cylinder": 51,
      "plane": 2
    },
    "axis_count": 51,
    "repeat_spacings_mm": [],
    "metrics": {
      "bounding_box_mm": [
        9.9999999,
        -20.787855301,
        -20.788192938,
        500.0000001,
        20.787855385,
        20.788207029
      ],
      "volume_mm3": 558414.943095531,
      "surface_area_mm2": 76238.157350519,
      "solid_count": 1,
      "face_count": 103,
      "edge_count": 303,
      "vertex_count": 202
    },
    "error": null,
    "truth_comparison": {
      "expected_from_evidence": {
        "bounding_box_mm": [
          0.267707604,
          -22.216635317,
          -23.53377764,
          509.710140744,
          22.226944612,
          23.536941565
        ],
        "volume_mm3": 558590.190562643,
        "surface_area_mm2": 76218.342757746,
        "solid_count": 1,
        "face_count": 53,
        "edge_count": 251,
        "vertex_count": 200
      },
      "comparisons": {
        "volume_mm3": {
          "expected": 558590.190562643,
          "actual": 558414.943095531,
          "absolute_delta": 175.24746711202897,
          "within_tolerance": false
        },
        "surface_area_mm2": {
          "expected": 76218.342757746,
          "actual": 76238.157350519,
          "absolute_delta": 19.814592773007462,
          "within_tolerance": false
        },
        "bounding_box_mm": {
          "expected": [
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            -23.53377764,
            509.710140744,
            22.226944612,
            23.536941565
          ],
          "actual": [
            9.9999999,
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            -20.788192938,
            500.0000001,
            20.787855385,
            20.788207029
          ],
          "max_absolute_delta": 9.732292296,
          "within_tolerance": false
        },
        "solid_count": {
          "expected": 1,
          "actual": 1,
          "matches": true
        },
        "face_count": {
          "expected": 53,
          "actual": 103,
          "matches": false
        },
        "edge_count": {
          "expected": 251,
          "actual": 303,
          "matches": false
        },
        "vertex_count": {
          "expected": 200,
          "actual": 202,
          "matches": false
        }
      },
      "numeric_geometry_match": false,
      "topology_counts_match": false
    }
  },
  "features": [
    {
      "feature_id": "f_001",
      "source_name": "前视基准面",
      "atomic_id": "reference_plane",
      "execution_status": "deferred",
      "unresolved": [],
      "step_inferred_selector_count": 0
    },
    {
      "feature_id": "f_002",
      "source_name": "上视基准面",
      "atomic_id": "reference_plane",
      "execution_status": "deferred",
      "unresolved": [],
      "step_inferred_selector_count": 0
    },
    {
      "feature_id": "f_003",
      "source_name": "右视基准面",
      "atomic_id": "reference_plane",
      "execution_status": "deferred",
      "unresolved": [],
      "step_inferred_selector_count": 0
    }
  ],
  "semantic_validation": {
    "schema_version": "1.1.0",
    "feature_count": 3,
    "sketch_count": 1,
    "deferred_feature_ids": [
      "f_001",
      "f_002",
      "f_003"
    ],
    "unresolved": [],
    "future_rebuild_ready": true
  }
}